I've been using it for many years. It's fine to start a greenfield project, but I'm at an org with 12+ years of tech debt and every generation of application has a different build system and almost all of them are brittle as dry leaves. My metric for the value of a language isn't how convenient it is write, but how durable it is in maintenance. And for my money, Python is still vastly inferior to strongly-typed languages. Build tools, doc tools, and readable stack traces outweigh syntax or semantics.